Supposedly our last name was changed once we came across as well.

BF, I plan on doing the same through Ancestry as well this month as I'm doing it for my birthday. Most of my grandparent lines are searched out as I do ancestry stuff, but I'm vague on "where we came from" before we got off the boat in Virginia. Does the Ancestry DNA also tell you surnames you are kin to as well?

I think using one DNA service for a few extra bucks you can upload something into the other program so you can use both. I forget which way it is so I would look into it real good first before doing 23andme. I've heard it's better of course, but I would want to do the Ancestry one first too.